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Merge branch 'linus' into perf/urgent, to synchronize UAPI headers
[mirror_ubuntu-bionic-kernel.git] / drivers / hid / hid-multitouch.c
1 /*
2 * HID driver for multitouch panels
3 *
4 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
5 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
6 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
7 * Copyright (c) 2012-2013 Red Hat, Inc
8 *
9 * This code is partly based on hid-egalax.c:
10 *
11 * Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
12 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
13 * Copyright (c) 2010 Canonical, Ltd.
14 *
15 * This code is partly based on hid-3m-pct.c:
16 *
17 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
18 * Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
19 * Copyright (c) 2010 Canonical, Ltd.
20 *
21 */
22
23 /*
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the Free
26 * Software Foundation; either version 2 of the License, or (at your option)
27 * any later version.
28 */
29
30 /*
31 * This driver is regularly tested thanks to the tool hid-test[1].
32 * This tool relies on hid-replay[2] and a database of hid devices[3].
33 * Please run these regression tests before patching this module so that
34 * your patch won't break existing known devices.
35 *
36 * [1] https://github.com/bentiss/hid-test
37 * [2] https://github.com/bentiss/hid-replay
38 * [3] https://github.com/bentiss/hid-devices
39 */
40
41 #include <linux/device.h>
42 #include <linux/hid.h>
43 #include <linux/module.h>
44 #include <linux/slab.h>
45 #include <linux/input/mt.h>
46 #include <linux/jiffies.h>
47 #include <linux/string.h>
48 #include <linux/timer.h>
49
50
51 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
52 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
53 MODULE_DESCRIPTION("HID multitouch panels");
54 MODULE_LICENSE("GPL");
55
56 #include "hid-ids.h"
57
58 /* quirks to control the device */
59 #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0)
60 #define MT_QUIRK_SLOT_IS_CONTACTID BIT(1)
61 #define MT_QUIRK_CYPRESS BIT(2)
62 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER BIT(3)
63 #define MT_QUIRK_ALWAYS_VALID BIT(4)
64 #define MT_QUIRK_VALID_IS_INRANGE BIT(5)
65 #define MT_QUIRK_VALID_IS_CONFIDENCE BIT(6)
66 #define MT_QUIRK_CONFIDENCE BIT(7)
67 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE BIT(8)
68 #define MT_QUIRK_NO_AREA BIT(9)
69 #define MT_QUIRK_IGNORE_DUPLICATES BIT(10)
70 #define MT_QUIRK_HOVERING BIT(11)
71 #define MT_QUIRK_CONTACT_CNT_ACCURATE BIT(12)
72 #define MT_QUIRK_FORCE_GET_FEATURE BIT(13)
73 #define MT_QUIRK_FIX_CONST_CONTACT_ID BIT(14)
74 #define MT_QUIRK_TOUCH_SIZE_SCALING BIT(15)
75 #define MT_QUIRK_STICKY_FINGERS BIT(16)
76 #define MT_QUIRK_ASUS_CUSTOM_UP BIT(17)
77
78 #define MT_INPUTMODE_TOUCHSCREEN 0x02
79 #define MT_INPUTMODE_TOUCHPAD 0x03
80
81 #define MT_BUTTONTYPE_CLICKPAD 0
82
83 #define MT_IO_FLAGS_RUNNING 0
84 #define MT_IO_FLAGS_ACTIVE_SLOTS 1
85 #define MT_IO_FLAGS_PENDING_SLOTS 2
86
87 struct mt_slot {
88 __s32 x, y, cx, cy, p, w, h;
89 __s32 contactid; /* the device ContactID assigned to this slot */
90 bool touch_state; /* is the touch valid? */
91 bool inrange_state; /* is the finger in proximity of the sensor? */
92 bool confidence_state; /* is the touch made by a finger? */
93 };
94
95 struct mt_class {
96 __s32 name; /* MT_CLS */
97 __s32 quirks;
98 __s32 sn_move; /* Signal/noise ratio for move events */
99 __s32 sn_width; /* Signal/noise ratio for width events */
100 __s32 sn_height; /* Signal/noise ratio for height events */
101 __s32 sn_pressure; /* Signal/noise ratio for pressure events */
102 __u8 maxcontacts;
103 bool is_indirect; /* true for touchpads */
104 bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
105 };
106
107 struct mt_fields {
108 unsigned usages[HID_MAX_FIELDS];
109 unsigned int length;
110 };
111
112 struct mt_device {
113 struct mt_slot curdata; /* placeholder of incoming data */
114 struct mt_class mtclass; /* our mt device class */
115 struct timer_list release_timer; /* to release sticky fingers */
116 struct hid_device *hdev; /* hid_device we're attached to */
117 struct mt_fields *fields; /* temporary placeholder for storing the
118 multitouch fields */
119 unsigned long mt_io_flags; /* mt flags (MT_IO_FLAGS_*) */
120 int cc_index; /* contact count field index in the report */
121 int cc_value_index; /* contact count value index in the field */
122 unsigned last_slot_field; /* the last field of a slot */
123 unsigned mt_report_id; /* the report ID of the multitouch device */
124 unsigned long initial_quirks; /* initial quirks state */
125 __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
126 __s16 inputmode_index; /* InputMode HID feature index in the report */
127 __s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
128 -1 if non-existent */
129 __u8 inputmode_value; /* InputMode HID feature value */
130 __u8 num_received; /* how many contacts we received */
131 __u8 num_expected; /* expected last contact index */
132 __u8 maxcontacts;
133 __u8 touches_by_report; /* how many touches are present in one report:
134 * 1 means we should use a serial protocol
135 * > 1 means hybrid (multitouch) protocol */
136 __u8 buttons_count; /* number of physical buttons per touchpad */
137 bool is_buttonpad; /* is this device a button pad? */
138 bool serial_maybe; /* need to check for serial protocol */
139 bool curvalid; /* is the current contact valid? */
140 unsigned mt_flags; /* flags to pass to input-mt */
141 __s32 dev_time; /* the scan time provided by the device */
142 unsigned long jiffies; /* the frame's jiffies */
143 int timestamp; /* the timestamp to be sent */
144 };
145
146 static void mt_post_parse_default_settings(struct mt_device *td);
147 static void mt_post_parse(struct mt_device *td);
148
149 /* classes of device behavior */
150 #define MT_CLS_DEFAULT 0x0001
151
152 #define MT_CLS_SERIAL 0x0002
153 #define MT_CLS_CONFIDENCE 0x0003
154 #define MT_CLS_CONFIDENCE_CONTACT_ID 0x0004
155 #define MT_CLS_CONFIDENCE_MINUS_ONE 0x0005
156 #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
157 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
158 /* reserved 0x0008 */
159 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
160 #define MT_CLS_NSMU 0x000a
161 /* reserved 0x0010 */
162 /* reserved 0x0011 */
163 #define MT_CLS_WIN_8 0x0012
164 #define MT_CLS_EXPORT_ALL_INPUTS 0x0013
165 #define MT_CLS_WIN_8_DUAL 0x0014
166
167 /* vendor specific classes */
168 #define MT_CLS_3M 0x0101
169 /* reserved 0x0102 */
170 #define MT_CLS_EGALAX 0x0103
171 #define MT_CLS_EGALAX_SERIAL 0x0104
172 #define MT_CLS_TOPSEED 0x0105
173 #define MT_CLS_PANASONIC 0x0106
174 #define MT_CLS_FLATFROG 0x0107
175 #define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
176 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
177 #define MT_CLS_LG 0x010a
178 #define MT_CLS_ASUS 0x010b
179 #define MT_CLS_VTL 0x0110
180 #define MT_CLS_GOOGLE 0x0111
181
182 #define MT_DEFAULT_MAXCONTACT 10
183 #define MT_MAX_MAXCONTACT 250
184
185 /*
186 * Resync device and local timestamps after that many microseconds without
187 * receiving data.
188 */
189 #define MAX_TIMESTAMP_INTERVAL 1000000
190
191 #define MT_USB_DEVICE(v, p) HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
192 #define MT_BT_DEVICE(v, p) HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
193
194 /*
195 * these device-dependent functions determine what slot corresponds
196 * to a valid contact that was just read.
197 */
198
199 static int cypress_compute_slot(struct mt_device *td)
200 {
201 if (td->curdata.contactid != 0 || td->num_received == 0)
202 return td->curdata.contactid;
203 else
204 return -1;
205 }
206
207 static struct mt_class mt_classes[] = {
208 { .name = MT_CLS_DEFAULT,
209 .quirks = MT_QUIRK_ALWAYS_VALID |
210 MT_QUIRK_CONTACT_CNT_ACCURATE },
211 { .name = MT_CLS_NSMU,
212 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
213 { .name = MT_CLS_SERIAL,
214 .quirks = MT_QUIRK_ALWAYS_VALID},
215 { .name = MT_CLS_CONFIDENCE,
216 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
217 { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
218 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
219 MT_QUIRK_SLOT_IS_CONTACTID },
220 { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
221 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
222 MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
223 { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
224 .quirks = MT_QUIRK_VALID_IS_INRANGE |
225 MT_QUIRK_SLOT_IS_CONTACTID,
226 .maxcontacts = 2 },
227 { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
228 .quirks = MT_QUIRK_VALID_IS_INRANGE |
229 MT_QUIRK_SLOT_IS_CONTACTNUMBER,
230 .maxcontacts = 2 },
231 { .name = MT_CLS_INRANGE_CONTACTNUMBER,
232 .quirks = MT_QUIRK_VALID_IS_INRANGE |
233 MT_QUIRK_SLOT_IS_CONTACTNUMBER },
234 { .name = MT_CLS_WIN_8,
235 .quirks = MT_QUIRK_ALWAYS_VALID |
236 MT_QUIRK_IGNORE_DUPLICATES |
237 MT_QUIRK_HOVERING |
238 MT_QUIRK_CONTACT_CNT_ACCURATE |
239 MT_QUIRK_STICKY_FINGERS },
240 { .name = MT_CLS_EXPORT_ALL_INPUTS,
241 .quirks = MT_QUIRK_ALWAYS_VALID |
242 MT_QUIRK_CONTACT_CNT_ACCURATE,
243 .export_all_inputs = true },
244 { .name = MT_CLS_WIN_8_DUAL,
245 .quirks = MT_QUIRK_ALWAYS_VALID |
246 MT_QUIRK_IGNORE_DUPLICATES |
247 MT_QUIRK_HOVERING |
248 MT_QUIRK_CONTACT_CNT_ACCURATE,
249 .export_all_inputs = true },
250
251 /*
252 * vendor specific classes
253 */
254 { .name = MT_CLS_3M,
255 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
256 MT_QUIRK_SLOT_IS_CONTACTID |
257 MT_QUIRK_TOUCH_SIZE_SCALING,
258 .sn_move = 2048,
259 .sn_width = 128,
260 .sn_height = 128,
261 .maxcontacts = 60,
262 },
263 { .name = MT_CLS_EGALAX,
264 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
265 MT_QUIRK_VALID_IS_INRANGE,
266 .sn_move = 4096,
267 .sn_pressure = 32,
268 },
269 { .name = MT_CLS_EGALAX_SERIAL,
270 .quirks = MT_QUIRK_SLOT_IS_CONTACTID |
271 MT_QUIRK_ALWAYS_VALID,
272 .sn_move = 4096,
273 .sn_pressure = 32,
274 },
275 { .name = MT_CLS_TOPSEED,
276 .quirks = MT_QUIRK_ALWAYS_VALID,
277 .is_indirect = true,
278 .maxcontacts = 2,
279 },
280 { .name = MT_CLS_PANASONIC,
281 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
282 .maxcontacts = 4 },
283 { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
284 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
285 MT_QUIRK_VALID_IS_INRANGE |
286 MT_QUIRK_SLOT_IS_CONTACTID,
287 .maxcontacts = 2
288 },
289 { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
290 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
291 MT_QUIRK_SLOT_IS_CONTACTID
292 },
293
294 { .name = MT_CLS_FLATFROG,
295 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
296 MT_QUIRK_NO_AREA,
297 .sn_move = 2048,
298 .maxcontacts = 40,
299 },
300 { .name = MT_CLS_LG,
301 .quirks = MT_QUIRK_ALWAYS_VALID |
302 MT_QUIRK_FIX_CONST_CONTACT_ID |
303 MT_QUIRK_IGNORE_DUPLICATES |
304 MT_QUIRK_HOVERING |
305 MT_QUIRK_CONTACT_CNT_ACCURATE },
306 { .name = MT_CLS_ASUS,
307 .quirks = MT_QUIRK_ALWAYS_VALID |
308 MT_QUIRK_CONTACT_CNT_ACCURATE |
309 MT_QUIRK_ASUS_CUSTOM_UP },
310 { .name = MT_CLS_VTL,
311 .quirks = MT_QUIRK_ALWAYS_VALID |
312 MT_QUIRK_CONTACT_CNT_ACCURATE |
313 MT_QUIRK_FORCE_GET_FEATURE,
314 },
315 { .name = MT_CLS_GOOGLE,
316 .quirks = MT_QUIRK_ALWAYS_VALID |
317 MT_QUIRK_CONTACT_CNT_ACCURATE |
318 MT_QUIRK_SLOT_IS_CONTACTID |
319 MT_QUIRK_HOVERING
320 },
321 { }
322 };
323
324 static ssize_t mt_show_quirks(struct device *dev,
325 struct device_attribute *attr,
326 char *buf)
327 {
328 struct hid_device *hdev = to_hid_device(dev);
329 struct mt_device *td = hid_get_drvdata(hdev);
330
331 return sprintf(buf, "%u\n", td->mtclass.quirks);
332 }
333
334 static ssize_t mt_set_quirks(struct device *dev,
335 struct device_attribute *attr,
336 const char *buf, size_t count)
337 {
338 struct hid_device *hdev = to_hid_device(dev);
339 struct mt_device *td = hid_get_drvdata(hdev);
340
341 unsigned long val;
342
343 if (kstrtoul(buf, 0, &val))
344 return -EINVAL;
345
346 td->mtclass.quirks = val;
347
348 if (td->cc_index < 0)
349 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
350
351 return count;
352 }
353
354 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
355
356 static struct attribute *sysfs_attrs[] = {
357 &dev_attr_quirks.attr,
358 NULL
359 };
360
361 static const struct attribute_group mt_attribute_group = {
362 .attrs = sysfs_attrs
363 };
364
365 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
366 {
367 struct mt_device *td = hid_get_drvdata(hdev);
368 int ret, size = hid_report_len(report);
369 u8 *buf;
370
371 /*
372 * Do not fetch the feature report if the device has been explicitly
373 * marked as non-capable.
374 */
375 if (td->initial_quirks & HID_QUIRK_NO_INIT_REPORTS)
376 return;
377
378 buf = hid_alloc_report_buf(report, GFP_KERNEL);
379 if (!buf)
380 return;
381
382 ret = hid_hw_raw_request(hdev, report->id, buf, size,
383 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
384 if (ret < 0) {
385 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
386 report->id);
387 } else {
388 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
389 size, 0);
390 if (ret)
391 dev_warn(&hdev->dev, "failed to report feature\n");
392 }
393
394 kfree(buf);
395 }
396
397 static void mt_feature_mapping(struct hid_device *hdev,
398 struct hid_field *field, struct hid_usage *usage)
399 {
400 struct mt_device *td = hid_get_drvdata(hdev);
401
402 switch (usage->hid) {
403 case HID_DG_INPUTMODE:
404 /* Ignore if value index is out of bounds. */
405 if (usage->usage_index >= field->report_count) {
406 dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
407 break;
408 }
409
410 if (td->inputmode < 0) {
411 td->inputmode = field->report->id;
412 td->inputmode_index = usage->usage_index;
413 } else {
414 /*
415 * Some elan panels wrongly declare 2 input mode
416 * features, and silently ignore when we set the
417 * value in the second field. Skip the second feature
418 * and hope for the best.
419 */
420 dev_info(&hdev->dev,
421 "Ignoring the extra HID_DG_INPUTMODE\n");
422 }
423
424 break;
425 case HID_DG_CONTACTMAX:
426 mt_get_feature(hdev, field->report);
427
428 td->maxcontact_report_id = field->report->id;
429 td->maxcontacts = field->value[0];
430 if (!td->maxcontacts &&
431 field->logical_maximum <= MT_MAX_MAXCONTACT)
432 td->maxcontacts = field->logical_maximum;
433 if (td->mtclass.maxcontacts)
434 /* check if the maxcontacts is given by the class */
435 td->maxcontacts = td->mtclass.maxcontacts;
436
437 break;
438 case HID_DG_BUTTONTYPE:
439 if (usage->usage_index >= field->report_count) {
440 dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
441 break;
442 }
443
444 mt_get_feature(hdev, field->report);
445 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
446 td->is_buttonpad = true;
447
448 break;
449 case 0xff0000c5:
450 /* Retrieve the Win8 blob once to enable some devices */
451 if (usage->usage_index == 0)
452 mt_get_feature(hdev, field->report);
453 break;
454 }
455 }
456
457 static void set_abs(struct input_dev *input, unsigned int code,
458 struct hid_field *field, int snratio)
459 {
460 int fmin = field->logical_minimum;
461 int fmax = field->logical_maximum;
462 int fuzz = snratio ? (fmax - fmin) / snratio : 0;
463 input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
464 input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
465 }
466
467 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
468 struct hid_input *hi)
469 {
470 struct mt_fields *f = td->fields;
471
472 if (f->length >= HID_MAX_FIELDS)
473 return;
474
475 f->usages[f->length++] = usage->hid;
476 }
477
478 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
479 struct hid_field *field, struct hid_usage *usage,
480 unsigned long **bit, int *max)
481 {
482 struct mt_device *td = hid_get_drvdata(hdev);
483 struct mt_class *cls = &td->mtclass;
484 int code;
485 struct hid_usage *prev_usage = NULL;
486
487 if (field->application == HID_DG_TOUCHSCREEN)
488 td->mt_flags |= INPUT_MT_DIRECT;
489
490 /*
491 * Model touchscreens providing buttons as touchpads.
492 */
493 if (field->application == HID_DG_TOUCHPAD ||
494 (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
495 td->mt_flags |= INPUT_MT_POINTER;
496 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
497 }
498
499 /* count the buttons on touchpads */
500 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
501 td->buttons_count++;
502
503 if (usage->usage_index)
504 prev_usage = &field->usage[usage->usage_index - 1];
505
506 switch (usage->hid & HID_USAGE_PAGE) {
507
508 case HID_UP_GENDESK:
509 switch (usage->hid) {
510 case HID_GD_X:
511 if (prev_usage && (prev_usage->hid == usage->hid)) {
512 hid_map_usage(hi, usage, bit, max,
513 EV_ABS, ABS_MT_TOOL_X);
514 set_abs(hi->input, ABS_MT_TOOL_X, field,
515 cls->sn_move);
516 } else {
517 hid_map_usage(hi, usage, bit, max,
518 EV_ABS, ABS_MT_POSITION_X);
519 set_abs(hi->input, ABS_MT_POSITION_X, field,
520 cls->sn_move);
521 }
522
523 mt_store_field(usage, td, hi);
524 return 1;
525 case HID_GD_Y:
526 if (prev_usage && (prev_usage->hid == usage->hid)) {
527 hid_map_usage(hi, usage, bit, max,
528 EV_ABS, ABS_MT_TOOL_Y);
529 set_abs(hi->input, ABS_MT_TOOL_Y, field,
530 cls->sn_move);
531 } else {
532 hid_map_usage(hi, usage, bit, max,
533 EV_ABS, ABS_MT_POSITION_Y);
534 set_abs(hi->input, ABS_MT_POSITION_Y, field,
535 cls->sn_move);
536 }
537
538 mt_store_field(usage, td, hi);
539 return 1;
540 }
541 return 0;
542
543 case HID_UP_DIGITIZER:
544 switch (usage->hid) {
545 case HID_DG_INRANGE:
546 if (cls->quirks & MT_QUIRK_HOVERING) {
547 hid_map_usage(hi, usage, bit, max,
548 EV_ABS, ABS_MT_DISTANCE);
549 input_set_abs_params(hi->input,
550 ABS_MT_DISTANCE, 0, 1, 0, 0);
551 }
552 mt_store_field(usage, td, hi);
553 return 1;
554 case HID_DG_CONFIDENCE:
555 if ((cls->name == MT_CLS_WIN_8 ||
556 cls->name == MT_CLS_WIN_8_DUAL) &&
557 field->application == HID_DG_TOUCHPAD)
558 cls->quirks |= MT_QUIRK_CONFIDENCE;
559 mt_store_field(usage, td, hi);
560 return 1;
561 case HID_DG_TIPSWITCH:
562 hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
563 input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
564 mt_store_field(usage, td, hi);
565 return 1;
566 case HID_DG_CONTACTID:
567 mt_store_field(usage, td, hi);
568 td->touches_by_report++;
569 td->mt_report_id = field->report->id;
570 return 1;
571 case HID_DG_WIDTH:
572 hid_map_usage(hi, usage, bit, max,
573 EV_ABS, ABS_MT_TOUCH_MAJOR);
574 if (!(cls->quirks & MT_QUIRK_NO_AREA))
575 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
576 cls->sn_width);
577 mt_store_field(usage, td, hi);
578 return 1;
579 case HID_DG_HEIGHT:
580 hid_map_usage(hi, usage, bit, max,
581 EV_ABS, ABS_MT_TOUCH_MINOR);
582 if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
583 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
584 cls->sn_height);
585 input_set_abs_params(hi->input,
586 ABS_MT_ORIENTATION, 0, 1, 0, 0);
587 }
588 mt_store_field(usage, td, hi);
589 return 1;
590 case HID_DG_TIPPRESSURE:
591 hid_map_usage(hi, usage, bit, max,
592 EV_ABS, ABS_MT_PRESSURE);
593 set_abs(hi->input, ABS_MT_PRESSURE, field,
594 cls->sn_pressure);
595 mt_store_field(usage, td, hi);
596 return 1;
597 case HID_DG_SCANTIME:
598 hid_map_usage(hi, usage, bit, max,
599 EV_MSC, MSC_TIMESTAMP);
600 input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
601 mt_store_field(usage, td, hi);
602 return 1;
603 case HID_DG_CONTACTCOUNT:
604 /* Ignore if indexes are out of bounds. */
605 if (field->index >= field->report->maxfield ||
606 usage->usage_index >= field->report_count)
607 return 1;
608 td->cc_index = field->index;
609 td->cc_value_index = usage->usage_index;
610 return 1;
611 case HID_DG_CONTACTMAX:
612 /* we don't set td->last_slot_field as contactcount and
613 * contact max are global to the report */
614 return -1;
615 case HID_DG_TOUCH:
616 /* Legacy devices use TIPSWITCH and not TOUCH.
617 * Let's just ignore this field. */
618 return -1;
619 }
620 /* let hid-input decide for the others */
621 return 0;
622
623 case HID_UP_BUTTON:
624 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
625 /*
626 * MS PTP spec says that external buttons left and right have
627 * usages 2 and 3.
628 */
629 if ((cls->name == MT_CLS_WIN_8 ||
630 cls->name == MT_CLS_WIN_8_DUAL) &&
631 field->application == HID_DG_TOUCHPAD &&
632 (usage->hid & HID_USAGE) > 1)
633 code--;
634 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
635 input_set_capability(hi->input, EV_KEY, code);
636 return 1;
637
638 case 0xff000000:
639 /* we do not want to map these: no input-oriented meaning */
640 return -1;
641 }
642
643 return 0;
644 }
645
646 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
647 {
648 __s32 quirks = td->mtclass.quirks;
649
650 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
651 return td->curdata.contactid;
652
653 if (quirks & MT_QUIRK_CYPRESS)
654 return cypress_compute_slot(td);
655
656 if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
657 return td->num_received;
658
659 if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
660 return td->curdata.contactid - 1;
661
662 return input_mt_get_slot_by_key(input, td->curdata.contactid);
663 }
664
665 /*
666 * this function is called when a whole contact has been processed,
667 * so that it can assign it to a slot and store the data there
668 */
669 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
670 {
671 if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
672 td->num_received >= td->num_expected)
673 return;
674
675 if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
676 int active;
677 int slotnum = mt_compute_slot(td, input);
678 struct mt_slot *s = &td->curdata;
679 struct input_mt *mt = input->mt;
680
681 if (slotnum < 0 || slotnum >= td->maxcontacts)
682 return;
683
684 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
685 struct input_mt_slot *slot = &mt->slots[slotnum];
686 if (input_mt_is_active(slot) &&
687 input_mt_is_used(mt, slot))
688 return;
689 }
690
691 if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE))
692 s->confidence_state = 1;
693 active = (s->touch_state || s->inrange_state) &&
694 s->confidence_state;
695
696 input_mt_slot(input, slotnum);
697 input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
698 if (active) {
699 /* this finger is in proximity of the sensor */
700 int wide = (s->w > s->h);
701 int major = max(s->w, s->h);
702 int minor = min(s->w, s->h);
703
704 /*
705 * divided by two to match visual scale of touch
706 * for devices with this quirk
707 */
708 if (td->mtclass.quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
709 major = major >> 1;
710 minor = minor >> 1;
711 }
712
713 input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
714 input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
715 input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
716 input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
717 input_event(input, EV_ABS, ABS_MT_DISTANCE,
718 !s->touch_state);
719 input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
720 input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
721 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
722 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
723
724 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
725 }
726 }
727
728 td->num_received++;
729 }
730
731 /*
732 * this function is called when a whole packet has been received and processed,
733 * so that it can decide what to send to the input layer.
734 */
735 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
736 {
737 input_mt_sync_frame(input);
738 input_event(input, EV_MSC, MSC_TIMESTAMP, td->timestamp);
739 input_sync(input);
740 td->num_received = 0;
741 if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
742 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
743 else
744 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
745 clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
746 }
747
748 static int mt_compute_timestamp(struct mt_device *td, struct hid_field *field,
749 __s32 value)
750 {
751 long delta = value - td->dev_time;
752 unsigned long jdelta = jiffies_to_usecs(jiffies - td->jiffies);
753
754 td->jiffies = jiffies;
755 td->dev_time = value;
756
757 if (delta < 0)
758 delta += field->logical_maximum;
759
760 /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
761 delta *= 100;
762
763 if (jdelta > MAX_TIMESTAMP_INTERVAL)
764 /* No data received for a while, resync the timestamp. */
765 return 0;
766 else
767 return td->timestamp + delta;
768 }
769
770 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
771 struct hid_usage *usage, __s32 value)
772 {
773 /* we will handle the hidinput part later, now remains hiddev */
774 if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
775 hid->hiddev_hid_event(hid, field, usage, value);
776
777 return 1;
778 }
779
780 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
781 struct hid_usage *usage, __s32 value)
782 {
783 struct mt_device *td = hid_get_drvdata(hid);
784 __s32 quirks = td->mtclass.quirks;
785 struct input_dev *input = field->hidinput->input;
786
787 if (hid->claimed & HID_CLAIMED_INPUT) {
788 switch (usage->hid) {
789 case HID_DG_INRANGE:
790 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
791 td->curvalid = value;
792 if (quirks & MT_QUIRK_HOVERING)
793 td->curdata.inrange_state = value;
794 break;
795 case HID_DG_TIPSWITCH:
796 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
797 td->curvalid = value;
798 td->curdata.touch_state = value;
799 break;
800 case HID_DG_CONFIDENCE:
801 if (quirks & MT_QUIRK_CONFIDENCE)
802 td->curdata.confidence_state = value;
803 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
804 td->curvalid = value;
805 break;
806 case HID_DG_CONTACTID:
807 td->curdata.contactid = value;
808 break;
809 case HID_DG_TIPPRESSURE:
810 td->curdata.p = value;
811 break;
812 case HID_GD_X:
813 if (usage->code == ABS_MT_TOOL_X)
814 td->curdata.cx = value;
815 else
816 td->curdata.x = value;
817 break;
818 case HID_GD_Y:
819 if (usage->code == ABS_MT_TOOL_Y)
820 td->curdata.cy = value;
821 else
822 td->curdata.y = value;
823 break;
824 case HID_DG_WIDTH:
825 td->curdata.w = value;
826 break;
827 case HID_DG_HEIGHT:
828 td->curdata.h = value;
829 break;
830 case HID_DG_SCANTIME:
831 td->timestamp = mt_compute_timestamp(td, field, value);
832 break;
833 case HID_DG_CONTACTCOUNT:
834 break;
835 case HID_DG_TOUCH:
836 /* do nothing */
837 break;
838
839 default:
840 if (usage->type)
841 input_event(input, usage->type, usage->code,
842 value);
843 return;
844 }
845
846 if (usage->usage_index + 1 == field->report_count) {
847 /* we only take into account the last report. */
848 if (usage->hid == td->last_slot_field)
849 mt_complete_slot(td, field->hidinput->input);
850 }
851
852 }
853 }
854
855 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
856 {
857 struct mt_device *td = hid_get_drvdata(hid);
858 struct hid_field *field;
859 unsigned count;
860 int r, n;
861
862 /* sticky fingers release in progress, abort */
863 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
864 return;
865
866 /*
867 * Includes multi-packet support where subsequent
868 * packets are sent with zero contactcount.
869 */
870 if (td->cc_index >= 0) {
871 struct hid_field *field = report->field[td->cc_index];
872 int value = field->value[td->cc_value_index];
873 if (value)
874 td->num_expected = value;
875 }
876
877 for (r = 0; r < report->maxfield; r++) {
878 field = report->field[r];
879 count = field->report_count;
880
881 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
882 continue;
883
884 for (n = 0; n < count; n++)
885 mt_process_mt_event(hid, field, &field->usage[n],
886 field->value[n]);
887 }
888
889 if (td->num_received >= td->num_expected)
890 mt_sync_frame(td, report->field[0]->hidinput->input);
891
892 /*
893 * Windows 8 specs says 2 things:
894 * - once a contact has been reported, it has to be reported in each
895 * subsequent report
896 * - the report rate when fingers are present has to be at least
897 * the refresh rate of the screen, 60 or 120 Hz
898 *
899 * I interprete this that the specification forces a report rate of
900 * at least 60 Hz for a touchscreen to be certified.
901 * Which means that if we do not get a report whithin 16 ms, either
902 * something wrong happens, either the touchscreen forgets to send
903 * a release. Taking a reasonable margin allows to remove issues
904 * with USB communication or the load of the machine.
905 *
906 * Given that Win 8 devices are forced to send a release, this will
907 * only affect laggish machines and the ones that have a firmware
908 * defect.
909 */
910 if (td->mtclass.quirks & MT_QUIRK_STICKY_FINGERS) {
911 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
912 mod_timer(&td->release_timer,
913 jiffies + msecs_to_jiffies(100));
914 else
915 del_timer(&td->release_timer);
916 }
917
918 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
919 }
920
921 static int mt_touch_input_configured(struct hid_device *hdev,
922 struct hid_input *hi)
923 {
924 struct mt_device *td = hid_get_drvdata(hdev);
925 struct mt_class *cls = &td->mtclass;
926 struct input_dev *input = hi->input;
927 int ret;
928
929 if (!td->maxcontacts)
930 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
931
932 mt_post_parse(td);
933 if (td->serial_maybe)
934 mt_post_parse_default_settings(td);
935
936 if (cls->is_indirect)
937 td->mt_flags |= INPUT_MT_POINTER;
938
939 if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
940 td->mt_flags |= INPUT_MT_DROP_UNUSED;
941
942 /* check for clickpads */
943 if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1))
944 td->is_buttonpad = true;
945
946 if (td->is_buttonpad)
947 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
948
949 ret = input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
950 if (ret)
951 return ret;
952
953 td->mt_flags = 0;
954 return 0;
955 }
956
957 #define mt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
958 max, EV_KEY, (c))
959 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
960 struct hid_field *field, struct hid_usage *usage,
961 unsigned long **bit, int *max)
962 {
963 struct mt_device *td = hid_get_drvdata(hdev);
964
965 /*
966 * If mtclass.export_all_inputs is not set, only map fields from
967 * TouchScreen or TouchPad collections. We need to ignore fields
968 * that belong to other collections such as Mouse that might have
969 * the same GenericDesktop usages.
970 */
971 if (!td->mtclass.export_all_inputs &&
972 field->application != HID_DG_TOUCHSCREEN &&
973 field->application != HID_DG_PEN &&
974 field->application != HID_DG_TOUCHPAD &&
975 field->application != HID_GD_KEYBOARD &&
976 field->application != HID_GD_SYSTEM_CONTROL &&
977 field->application != HID_CP_CONSUMER_CONTROL &&
978 field->application != HID_GD_WIRELESS_RADIO_CTLS &&
979 !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
980 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP))
981 return -1;
982
983 /*
984 * Some Asus keyboard+touchpad devices have the hotkeys defined in the
985 * touchpad report descriptor. We need to treat these as an array to
986 * map usages to input keys.
987 */
988 if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
989 td->mtclass.quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
990 (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
991 set_bit(EV_REP, hi->input->evbit);
992 if (field->flags & HID_MAIN_ITEM_VARIABLE)
993 field->flags &= ~HID_MAIN_ITEM_VARIABLE;
994 switch (usage->hid & HID_USAGE) {
995 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN); break;
996 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP); break;
997 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF); break;
998 case 0x6b: mt_map_key_clear(KEY_F21); break;
999 case 0x6c: mt_map_key_clear(KEY_SLEEP); break;
1000 default:
1001 return -1;
1002 }
1003 return 1;
1004 }
1005
1006 /*
1007 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1008 * for the stylus.
1009 * The check for mt_report_id ensures we don't process
1010 * HID_DG_CONTACTCOUNT from the pen report as it is outside the physical
1011 * collection, but within the report ID.
1012 */
1013 if (field->physical == HID_DG_STYLUS)
1014 return 0;
1015 else if ((field->physical == 0) &&
1016 (field->report->id != td->mt_report_id) &&
1017 (td->mt_report_id != -1))
1018 return 0;
1019
1020 if (field->application == HID_DG_TOUCHSCREEN ||
1021 field->application == HID_DG_TOUCHPAD)
1022 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
1023
1024 /* let hid-core decide for the others */
1025 return 0;
1026 }
1027
1028 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1029 struct hid_field *field, struct hid_usage *usage,
1030 unsigned long **bit, int *max)
1031 {
1032 /*
1033 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1034 * for the stylus.
1035 */
1036 if (field->physical == HID_DG_STYLUS)
1037 return 0;
1038
1039 if (field->application == HID_DG_TOUCHSCREEN ||
1040 field->application == HID_DG_TOUCHPAD) {
1041 /* We own these mappings, tell hid-input to ignore them */
1042 return -1;
1043 }
1044
1045 /* let hid-core decide for the others */
1046 return 0;
1047 }
1048
1049 static int mt_event(struct hid_device *hid, struct hid_field *field,
1050 struct hid_usage *usage, __s32 value)
1051 {
1052 struct mt_device *td = hid_get_drvdata(hid);
1053
1054 if (field->report->id == td->mt_report_id)
1055 return mt_touch_event(hid, field, usage, value);
1056
1057 return 0;
1058 }
1059
1060 static void mt_report(struct hid_device *hid, struct hid_report *report)
1061 {
1062 struct mt_device *td = hid_get_drvdata(hid);
1063 struct hid_field *field = report->field[0];
1064
1065 if (!(hid->claimed & HID_CLAIMED_INPUT))
1066 return;
1067
1068 if (report->id == td->mt_report_id)
1069 return mt_touch_report(hid, report);
1070
1071 if (field && field->hidinput && field->hidinput->input)
1072 input_sync(field->hidinput->input);
1073 }
1074
1075 static void mt_set_input_mode(struct hid_device *hdev)
1076 {
1077 struct mt_device *td = hid_get_drvdata(hdev);
1078 struct hid_report *r;
1079 struct hid_report_enum *re;
1080 struct mt_class *cls = &td->mtclass;
1081 char *buf;
1082 int report_len;
1083
1084 if (td->inputmode < 0)
1085 return;
1086
1087 re = &(hdev->report_enum[HID_FEATURE_REPORT]);
1088 r = re->report_id_hash[td->inputmode];
1089 if (r) {
1090 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1091 report_len = hid_report_len(r);
1092 buf = hid_alloc_report_buf(r, GFP_KERNEL);
1093 if (!buf) {
1094 hid_err(hdev, "failed to allocate buffer for report\n");
1095 return;
1096 }
1097 hid_hw_raw_request(hdev, r->id, buf, report_len,
1098 HID_FEATURE_REPORT,
1099 HID_REQ_GET_REPORT);
1100 kfree(buf);
1101 }
1102 r->field[0]->value[td->inputmode_index] = td->inputmode_value;
1103 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1104 }
1105 }
1106
1107 static void mt_set_maxcontacts(struct hid_device *hdev)
1108 {
1109 struct mt_device *td = hid_get_drvdata(hdev);
1110 struct hid_report *r;
1111 struct hid_report_enum *re;
1112 int fieldmax, max;
1113
1114 if (td->maxcontact_report_id < 0)
1115 return;
1116
1117 if (!td->mtclass.maxcontacts)
1118 return;
1119
1120 re = &hdev->report_enum[HID_FEATURE_REPORT];
1121 r = re->report_id_hash[td->maxcontact_report_id];
1122 if (r) {
1123 max = td->mtclass.maxcontacts;
1124 fieldmax = r->field[0]->logical_maximum;
1125 max = min(fieldmax, max);
1126 if (r->field[0]->value[0] != max) {
1127 r->field[0]->value[0] = max;
1128 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
1129 }
1130 }
1131 }
1132
1133 static void mt_post_parse_default_settings(struct mt_device *td)
1134 {
1135 __s32 quirks = td->mtclass.quirks;
1136
1137 /* unknown serial device needs special quirks */
1138 if (td->touches_by_report == 1) {
1139 quirks |= MT_QUIRK_ALWAYS_VALID;
1140 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1141 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1142 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1143 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1144 }
1145
1146 td->mtclass.quirks = quirks;
1147 }
1148
1149 static void mt_post_parse(struct mt_device *td)
1150 {
1151 struct mt_fields *f = td->fields;
1152 struct mt_class *cls = &td->mtclass;
1153
1154 if (td->touches_by_report > 0) {
1155 int field_count_per_touch = f->length / td->touches_by_report;
1156 td->last_slot_field = f->usages[field_count_per_touch - 1];
1157 }
1158
1159 if (td->cc_index < 0)
1160 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1161 }
1162
1163 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1164 {
1165 struct mt_device *td = hid_get_drvdata(hdev);
1166 char *name;
1167 const char *suffix = NULL;
1168 struct hid_field *field = hi->report->field[0];
1169 int ret;
1170
1171 if (hi->report->id == td->mt_report_id) {
1172 ret = mt_touch_input_configured(hdev, hi);
1173 if (ret)
1174 return ret;
1175 }
1176
1177 /*
1178 * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
1179 * for the stylus. Check this first, and then rely on the application
1180 * field.
1181 */
1182 if (hi->report->field[0]->physical == HID_DG_STYLUS) {
1183 suffix = "Pen";
1184 /* force BTN_STYLUS to allow tablet matching in udev */
1185 __set_bit(BTN_STYLUS, hi->input->keybit);
1186 } else {
1187 switch (field->application) {
1188 case HID_GD_KEYBOARD:
1189 suffix = "Keyboard";
1190 break;
1191 case HID_GD_KEYPAD:
1192 suffix = "Keypad";
1193 break;
1194 case HID_GD_MOUSE:
1195 suffix = "Mouse";
1196 break;
1197 case HID_DG_STYLUS:
1198 suffix = "Pen";
1199 /* force BTN_STYLUS to allow tablet matching in udev */
1200 __set_bit(BTN_STYLUS, hi->input->keybit);
1201 break;
1202 case HID_DG_TOUCHSCREEN:
1203 /* we do not set suffix = "Touchscreen" */
1204 break;
1205 case HID_DG_TOUCHPAD:
1206 suffix = "Touchpad";
1207 break;
1208 case HID_GD_SYSTEM_CONTROL:
1209 suffix = "System Control";
1210 break;
1211 case HID_CP_CONSUMER_CONTROL:
1212 suffix = "Consumer Control";
1213 break;
1214 case HID_GD_WIRELESS_RADIO_CTLS:
1215 suffix = "Wireless Radio Control";
1216 break;
1217 case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1218 suffix = "Custom Media Keys";
1219 break;
1220 default:
1221 suffix = "UNKNOWN";
1222 break;
1223 }
1224 }
1225
1226 if (suffix) {
1227 name = devm_kzalloc(&hi->input->dev,
1228 strlen(hdev->name) + strlen(suffix) + 2,
1229 GFP_KERNEL);
1230 if (name) {
1231 sprintf(name, "%s %s", hdev->name, suffix);
1232 hi->input->name = name;
1233 }
1234 }
1235
1236 return 0;
1237 }
1238
1239 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1240 {
1241 if (field->usage[0].hid != usage ||
1242 !(field->flags & HID_MAIN_ITEM_CONSTANT))
1243 return;
1244
1245 field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1246 field->flags |= HID_MAIN_ITEM_VARIABLE;
1247 }
1248
1249 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1250 {
1251 struct hid_report *report;
1252 int i;
1253
1254 list_for_each_entry(report,
1255 &hdev->report_enum[HID_INPUT_REPORT].report_list,
1256 list) {
1257
1258 if (!report->maxfield)
1259 continue;
1260
1261 for (i = 0; i < report->maxfield; i++)
1262 if (report->field[i]->maxusage >= 1)
1263 mt_fix_const_field(report->field[i], usage);
1264 }
1265 }
1266
1267 static void mt_release_contacts(struct hid_device *hid)
1268 {
1269 struct hid_input *hidinput;
1270 struct mt_device *td = hid_get_drvdata(hid);
1271
1272 list_for_each_entry(hidinput, &hid->inputs, list) {
1273 struct input_dev *input_dev = hidinput->input;
1274 struct input_mt *mt = input_dev->mt;
1275 int i;
1276
1277 if (mt) {
1278 for (i = 0; i < mt->num_slots; i++) {
1279 input_mt_slot(input_dev, i);
1280 input_mt_report_slot_state(input_dev,
1281 MT_TOOL_FINGER,
1282 false);
1283 }
1284 input_mt_sync_frame(input_dev);
1285 input_sync(input_dev);
1286 }
1287 }
1288
1289 td->num_received = 0;
1290 }
1291
1292 static void mt_expired_timeout(struct timer_list *t)
1293 {
1294 struct mt_device *td = from_timer(td, t, release_timer);
1295 struct hid_device *hdev = td->hdev;
1296
1297 /*
1298 * An input report came in just before we release the sticky fingers,
1299 * it will take care of the sticky fingers.
1300 */
1301 if (test_and_set_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1302 return;
1303 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1304 mt_release_contacts(hdev);
1305 clear_bit(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1306 }
1307
1308 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1309 {
1310 int ret, i;
1311 struct mt_device *td;
1312 struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1313
1314 for (i = 0; mt_classes[i].name ; i++) {
1315 if (id->driver_data == mt_classes[i].name) {
1316 mtclass = &(mt_classes[i]);
1317 break;
1318 }
1319 }
1320
1321 td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1322 if (!td) {
1323 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1324 return -ENOMEM;
1325 }
1326 td->hdev = hdev;
1327 td->mtclass = *mtclass;
1328 td->inputmode = -1;
1329 td->maxcontact_report_id = -1;
1330 td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1331 td->cc_index = -1;
1332 td->mt_report_id = -1;
1333 hid_set_drvdata(hdev, td);
1334
1335 td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
1336 GFP_KERNEL);
1337 if (!td->fields) {
1338 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
1339 return -ENOMEM;
1340 }
1341
1342 if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1343 td->serial_maybe = true;
1344
1345 /*
1346 * Store the initial quirk state
1347 */
1348 td->initial_quirks = hdev->quirks;
1349
1350 /* This allows the driver to correctly support devices
1351 * that emit events over several HID messages.
1352 */
1353 hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1354
1355 /*
1356 * This allows the driver to handle different input sensors
1357 * that emits events through different reports on the same HID
1358 * device.
1359 */
1360 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1361 hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
1362
1363 /*
1364 * Some multitouch screens do not like to be polled for input
1365 * reports. Fortunately, the Win8 spec says that all touches
1366 * should be sent during each report, making the initialization
1367 * of input reports unnecessary. For Win7 devices, well, let's hope
1368 * they will still be happy (this is only be a problem if a touch
1369 * was already there while probing the device).
1370 *
1371 * In addition some touchpads do not behave well if we read
1372 * all feature reports from them. Instead we prevent
1373 * initial report fetching and then selectively fetch each
1374 * report we are interested in.
1375 */
1376 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1377
1378 timer_setup(&td->release_timer, mt_expired_timeout, 0);
1379
1380 ret = hid_parse(hdev);
1381 if (ret != 0)
1382 return ret;
1383
1384 if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1385 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1386
1387 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1388 if (ret)
1389 return ret;
1390
1391 ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1392 if (ret)
1393 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1394 hdev->name);
1395
1396 mt_set_maxcontacts(hdev);
1397 mt_set_input_mode(hdev);
1398
1399 /* release .fields memory as it is not used anymore */
1400 devm_kfree(&hdev->dev, td->fields);
1401 td->fields = NULL;
1402
1403 return 0;
1404 }
1405
1406 #ifdef CONFIG_PM
1407 static int mt_reset_resume(struct hid_device *hdev)
1408 {
1409 mt_release_contacts(hdev);
1410 mt_set_maxcontacts(hdev);
1411 mt_set_input_mode(hdev);
1412 return 0;
1413 }
1414
1415 static int mt_resume(struct hid_device *hdev)
1416 {
1417 /* Some Elan legacy devices require SET_IDLE to be set on resume.
1418 * It should be safe to send it to other devices too.
1419 * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1420
1421 hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1422
1423 return 0;
1424 }
1425 #endif
1426
1427 static void mt_remove(struct hid_device *hdev)
1428 {
1429 struct mt_device *td = hid_get_drvdata(hdev);
1430
1431 del_timer_sync(&td->release_timer);
1432
1433 sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1434 hid_hw_stop(hdev);
1435 hdev->quirks = td->initial_quirks;
1436 }
1437
1438 /*
1439 * This list contains only:
1440 * - VID/PID of products not working with the default multitouch handling
1441 * - 2 generic rules.
1442 * So there is no point in adding here any device with MT_CLS_DEFAULT.
1443 */
1444 static const struct hid_device_id mt_devices[] = {
1445
1446 /* 3M panels */
1447 { .driver_data = MT_CLS_3M,
1448 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1449 USB_DEVICE_ID_3M1968) },
1450 { .driver_data = MT_CLS_3M,
1451 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1452 USB_DEVICE_ID_3M2256) },
1453 { .driver_data = MT_CLS_3M,
1454 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1455 USB_DEVICE_ID_3M3266) },
1456
1457 /* Alps devices */
1458 { .driver_data = MT_CLS_WIN_8_DUAL,
1459 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1460 USB_VENDOR_ID_ALPS_JP,
1461 HID_DEVICE_ID_ALPS_U1_DUAL_PTP) },
1462 { .driver_data = MT_CLS_WIN_8_DUAL,
1463 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1464 USB_VENDOR_ID_ALPS_JP,
1465 HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
1466
1467 /* Lenovo X1 TAB Gen 2 */
1468 { .driver_data = MT_CLS_WIN_8_DUAL,
1469 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1470 USB_VENDOR_ID_LENOVO,
1471 USB_DEVICE_ID_LENOVO_X1_TAB) },
1472
1473 /* Anton devices */
1474 { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1475 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1476 USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1477
1478 /* Asus T304UA */
1479 { .driver_data = MT_CLS_ASUS,
1480 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1481 USB_VENDOR_ID_ASUSTEK,
1482 USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1483
1484 /* Atmel panels */
1485 { .driver_data = MT_CLS_SERIAL,
1486 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1487 USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1488
1489 /* Baanto multitouch devices */
1490 { .driver_data = MT_CLS_NSMU,
1491 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1492 USB_DEVICE_ID_BAANTO_MT_190W2) },
1493
1494 /* Cando panels */
1495 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1496 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1497 USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1498 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1499 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1500 USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1501
1502 /* Chunghwa Telecom touch panels */
1503 { .driver_data = MT_CLS_NSMU,
1504 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1505 USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1506
1507 /* CJTouch panels */
1508 { .driver_data = MT_CLS_NSMU,
1509 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1510 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1511 { .driver_data = MT_CLS_NSMU,
1512 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1513 USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1514
1515 /* CVTouch panels */
1516 { .driver_data = MT_CLS_NSMU,
1517 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1518 USB_DEVICE_ID_CVTOUCH_SCREEN) },
1519
1520 /* eGalax devices (resistive) */
1521 { .driver_data = MT_CLS_EGALAX,
1522 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1523 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1524 { .driver_data = MT_CLS_EGALAX,
1525 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1526 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1527
1528 /* eGalax devices (capacitive) */
1529 { .driver_data = MT_CLS_EGALAX_SERIAL,
1530 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1531 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1532 { .driver_data = MT_CLS_EGALAX,
1533 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1534 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1535 { .driver_data = MT_CLS_EGALAX_SERIAL,
1536 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1537 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1538 { .driver_data = MT_CLS_EGALAX_SERIAL,
1539 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1540 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1541 { .driver_data = MT_CLS_EGALAX_SERIAL,
1542 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1543 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1544 { .driver_data = MT_CLS_EGALAX_SERIAL,
1545 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1546 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1547 { .driver_data = MT_CLS_EGALAX,
1548 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1549 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1550 { .driver_data = MT_CLS_EGALAX,
1551 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1552 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1553 { .driver_data = MT_CLS_EGALAX_SERIAL,
1554 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1555 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1556 { .driver_data = MT_CLS_EGALAX,
1557 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1558 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1559 { .driver_data = MT_CLS_EGALAX,
1560 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1561 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1562 { .driver_data = MT_CLS_EGALAX,
1563 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1564 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1565 { .driver_data = MT_CLS_EGALAX,
1566 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1567 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1568 { .driver_data = MT_CLS_EGALAX_SERIAL,
1569 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1570 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1571 { .driver_data = MT_CLS_EGALAX_SERIAL,
1572 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1573 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1574 { .driver_data = MT_CLS_EGALAX_SERIAL,
1575 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1576 USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1577
1578 /* Elitegroup panel */
1579 { .driver_data = MT_CLS_SERIAL,
1580 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1581 USB_DEVICE_ID_ELITEGROUP_05D8) },
1582
1583 /* Flatfrog Panels */
1584 { .driver_data = MT_CLS_FLATFROG,
1585 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1586 USB_DEVICE_ID_MULTITOUCH_3200) },
1587
1588 /* FocalTech Panels */
1589 { .driver_data = MT_CLS_SERIAL,
1590 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
1591 USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
1592
1593 /* GeneralTouch panel */
1594 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1595 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1596 USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1597 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1598 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1599 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1600 { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1601 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1602 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
1603 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1604 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1605 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
1606 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1607 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1608 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
1609 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1610 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1611 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
1612 { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1613 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1614 USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
1615
1616 /* Gametel game controller */
1617 { .driver_data = MT_CLS_NSMU,
1618 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1619 USB_DEVICE_ID_GAMETEL_MT_MODE) },
1620
1621 /* GoodTouch panels */
1622 { .driver_data = MT_CLS_NSMU,
1623 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1624 USB_DEVICE_ID_GOODTOUCH_000f) },
1625
1626 /* Hanvon panels */
1627 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1628 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1629 USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1630
1631 /* Ilitek dual touch panel */
1632 { .driver_data = MT_CLS_NSMU,
1633 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1634 USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1635
1636 /* LG Melfas panel */
1637 { .driver_data = MT_CLS_LG,
1638 HID_USB_DEVICE(USB_VENDOR_ID_LG,
1639 USB_DEVICE_ID_LG_MELFAS_MT) },
1640
1641 /* MosArt panels */
1642 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1643 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1644 USB_DEVICE_ID_ASUS_T91MT)},
1645 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1646 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1647 USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1648 { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1649 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1650 USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1651
1652 /* Panasonic panels */
1653 { .driver_data = MT_CLS_PANASONIC,
1654 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1655 USB_DEVICE_ID_PANABOARD_UBT780) },
1656 { .driver_data = MT_CLS_PANASONIC,
1657 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1658 USB_DEVICE_ID_PANABOARD_UBT880) },
1659
1660 /* Novatek Panel */
1661 { .driver_data = MT_CLS_NSMU,
1662 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1663 USB_DEVICE_ID_NOVATEK_PCT) },
1664
1665 /* Ntrig Panel */
1666 { .driver_data = MT_CLS_NSMU,
1667 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1668 USB_VENDOR_ID_NTRIG, 0x1b05) },
1669
1670 /* PixArt optical touch screen */
1671 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1672 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1673 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1674 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1675 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1676 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1677 { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1678 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1679 USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1680
1681 /* PixCir-based panels */
1682 { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1683 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1684 USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1685
1686 /* Quanta-based panels */
1687 { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1688 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1689 USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1690
1691 /* Stantum panels */
1692 { .driver_data = MT_CLS_CONFIDENCE,
1693 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1694 USB_DEVICE_ID_MTP_STM)},
1695
1696 /* TopSeed panels */
1697 { .driver_data = MT_CLS_TOPSEED,
1698 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1699 USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1700
1701 /* Touch International panels */
1702 { .driver_data = MT_CLS_NSMU,
1703 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1704 USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1705
1706 /* Unitec panels */
1707 { .driver_data = MT_CLS_NSMU,
1708 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1709 USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1710 { .driver_data = MT_CLS_NSMU,
1711 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1712 USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1713
1714 /* VTL panels */
1715 { .driver_data = MT_CLS_VTL,
1716 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
1717 USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
1718
1719 /* Wistron panels */
1720 { .driver_data = MT_CLS_NSMU,
1721 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
1722 USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
1723
1724 /* XAT */
1725 { .driver_data = MT_CLS_NSMU,
1726 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1727 USB_DEVICE_ID_XAT_CSR) },
1728
1729 /* Xiroku */
1730 { .driver_data = MT_CLS_NSMU,
1731 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1732 USB_DEVICE_ID_XIROKU_SPX) },
1733 { .driver_data = MT_CLS_NSMU,
1734 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1735 USB_DEVICE_ID_XIROKU_MPX) },
1736 { .driver_data = MT_CLS_NSMU,
1737 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1738 USB_DEVICE_ID_XIROKU_CSR) },
1739 { .driver_data = MT_CLS_NSMU,
1740 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1741 USB_DEVICE_ID_XIROKU_SPX1) },
1742 { .driver_data = MT_CLS_NSMU,
1743 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1744 USB_DEVICE_ID_XIROKU_MPX1) },
1745 { .driver_data = MT_CLS_NSMU,
1746 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1747 USB_DEVICE_ID_XIROKU_CSR1) },
1748 { .driver_data = MT_CLS_NSMU,
1749 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1750 USB_DEVICE_ID_XIROKU_SPX2) },
1751 { .driver_data = MT_CLS_NSMU,
1752 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1753 USB_DEVICE_ID_XIROKU_MPX2) },
1754 { .driver_data = MT_CLS_NSMU,
1755 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1756 USB_DEVICE_ID_XIROKU_CSR2) },
1757
1758 /* Google MT devices */
1759 { .driver_data = MT_CLS_GOOGLE,
1760 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
1761 USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
1762
1763 /* Generic MT device */
1764 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1765
1766 /* Generic Win 8 certified MT device */
1767 { .driver_data = MT_CLS_WIN_8,
1768 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1769 HID_ANY_ID, HID_ANY_ID) },
1770 { }
1771 };
1772 MODULE_DEVICE_TABLE(hid, mt_devices);
1773
1774 static const struct hid_usage_id mt_grabbed_usages[] = {
1775 { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1776 { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1777 };
1778
1779 static struct hid_driver mt_driver = {
1780 .name = "hid-multitouch",
1781 .id_table = mt_devices,
1782 .probe = mt_probe,
1783 .remove = mt_remove,
1784 .input_mapping = mt_input_mapping,
1785 .input_mapped = mt_input_mapped,
1786 .input_configured = mt_input_configured,
1787 .feature_mapping = mt_feature_mapping,
1788 .usage_table = mt_grabbed_usages,
1789 .event = mt_event,
1790 .report = mt_report,
1791 #ifdef CONFIG_PM
1792 .reset_resume = mt_reset_resume,
1793 .resume = mt_resume,
1794 #endif
1795 };
1796 module_hid_driver(mt_driver);
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